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Cheap flights from Ottawa to London Heathrow Airport from C$ 391

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
11 Mar — 18 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in November or January, booked 68 days in advance, depart on a Tuesday or Thursday and return on a Friday

Cheap flight deals from Ottawa to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 February 2026.

Sat 9/55:55 a.m.
YOW
-
LHR
2 stops34h 50m
Multiple Airlines
Sat 23/56:15 a.m.
LHR
-
YOW
2 stops23h 05m
Multiple Airlines
Deal found 7/2C$ 813
Mon 17/85:55 a.m.
YOW
-
LHR
2 stops27h 25m
Multiple Airlines
Wed 19/86:15 a.m.
LHR
-
YOW
2 stops16h 20m
Multiple Airlines
Deal found 7/2C$ 820
Wed 2/95:55 a.m.
YOW
-
LHR
2 stops28h 20m
Multiple Airlines
Wed 16/96:15 a.m.
LHR
-
YOW
2 stops16h 20m
Multiple Airlines
Deal found 6/2C$ 824
Mon 20/76:35 p.m.
YOW
-
LHR
2 stops22h 05m
Multiple Airlines
Thu 30/76:20 a.m.
LHR
-
YOW
2 stops16h 15m
Multiple Airlines
Deal found 7/2C$ 842
Thu 14/512:15 p.m.
YOW
-
LHR
1 stop27h 45m
Air Canada
Fri 29/512:40 p.m.
LHR
-
YOW
1 stop10h 53m
Air Canada
Deal found 7/2C$ 849
Thu 14/512:15 p.m.
YOW
-
LHR
1 stop27h 45m
Air Canada
Tue 26/512:40 p.m.
LHR
-
YOW
1 stop10h 53m
Air Canada
Deal found 8/2C$ 850
Mon 25/58:50 a.m.
YOW
-
LHR
1 stop31h 10m
Air Canada
Sun 7/69:30 a.m.
LHR
-
YOW
2 stops17h 21m
Air Canada
Deal found 7/2C$ 854
Sun 24/57:15 p.m.
YOW
-
LHR
1 stop9h 45m
Air Canada
Sun 7/69:30 a.m.
LHR
-
YOW
2 stops17h 21m
Air Canada
Deal found 7/2C$ 858
Fri 15/58:00 p.m.
YOW
-
LHR
1 stop10h 50m
Air Canada
Fri 29/512:40 p.m.
LHR
-
YOW
1 stop10h 53m
Air Canada
Deal found 7/2C$ 861
Tue 26/52:00 p.m.
YOW
-
LHR
1 stop11h 35m
Air Canada
Sun 7/69:30 a.m.
LHR
-
YOW
1 stop17h 41m
Air Canada
Deal found 7/2C$ 865
Fri 22/54:00 p.m.
YOW
-
LHR
1 stop12h 35m
Air Canada
Fri 5/612:40 p.m.
LHR
-
YOW
1 stop10h 53m
Air Canada
Deal found 6/2C$ 869

Find flight deals from Ottawa to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 9 February 2026.

Round-trip from

C$ 813

One-way from

C$ 391

Popular in

December

Cheapest in

November

Average price

C$ 1,070

Good round-trip deal

C$ 986 or less

Good one-way deal

C$ 951 or less
9/5-23/5
  • 9/5-23/5
  • 4 total stops
  • 57h 55m total
  • Ottawa to London
Search Deals
2/6
  • 2/6
  • 2 total stops
  • 34h 50m total
  • Ottawa to London
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Ottawa to London Heathrow.
Search Deals
Price to beat on a one-way flight from Ottawa to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 9 February 2026.
Use the filters below to find and compare flights from Ottawa to London Heathrow Airport that are best for you.

Fly from

Ottawa

Fly to

Heathrow

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 23/2

5:20 p.m.-1:45 p.m.

1 stop15h 25m

London Heathrow

Tue 3/3

6:20 a.m.-3:10 p.m.

1 stop13h 50m

C$ 936

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 24/2

5:20 p.m.-1:50 p.m.

2 stops15h 30m

London Heathrow

Wed 4/3

11:30 a.m.-3:10 p.m.

1 stop32h 40m

C$ 999

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 5/5

7:15 p.m.-10:00 a.m.

1 stop9h 45m

London Heathrow

Wed 13/5

2:05 p.m.-7:41 p.m.

1 stop10h 36m

C$ 1,013

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 28/2

12:00 p.m.-6:30 a.m.

1 stop13h 30m

London Heathrow

Fri 6/3

12:00 p.m.-2:30 p.m.

Nonstop7h 30m

C$ 1,022

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 20/4

10:25 a.m.-5:55 a.m.

2 stops14h 30m

London Heathrow

Thu 7/5

8:40 a.m.-10:03 a.m.

2 stops30h 23m

C$ 1,054

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 10/3

3:15 p.m.-10:50 a.m.

2 stops15h 35m

London Heathrow

Tue 17/3

3:10 p.m.-10:26 a.m.

2 stops23h 16m

C$ 1,057

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 23/2

10:30 a.m.-9:10 a.m.

2 stops17h 40m

London Heathrow

Tue 10/3

9:10 a.m.-11:54 p.m.

2 stops18h 44m

C$ 1,057

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 10/3

2:15 p.m.-10:50 a.m.

1 stop16h 35m

London Heathrow

Wed 18/3

3:10 p.m.-10:26 a.m.

2 stops23h 16m

C$ 1,057

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 31/5

2:48 p.m.-10:40 a.m.

2 stops14h 52m

London Heathrow

Sun 14/6

7:30 a.m.-10:03 a.m.

2 stops31h 33m

C$ 1,061

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 9/5

2:40 p.m.-6:55 a.m.

1 stop11h 15m

London Heathrow

Mon 1/6

4:40 p.m.-11:54 p.m.

1 stop12h 14m

C$ 1,072

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/2

Showing 1-10 of 22 results
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Best time to book a flight from Ottawa to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ottawa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ottawa to London Heathrow Airport

How far ahead should I book a flight from Ottawa to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Heathrow. Price data was last updated on 6 February 2026.

The best time to book flights from Ottawa to London Heathrow Airport is 68 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 611). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 919). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YOW to LHR?

Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 February 2026.

When flying from Ottawa to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 9 February 2026.
Read reviews from past customers who have flown Air France,United Airlines, andAir Canada from Ottawa to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.4
Good
1,531 reviews
Check prices

Crew

8.1

Food

7.0

Boarding

7.4

Entertainment

7.0

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class
Air France
7.4
Good
1,531 reviews
Air France
7.4
Good
1,531 reviews
Check prices

Crew

8.1

Food

7.0

Boarding

7.4

Entertainment

7.0

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class
United Airlines
7.4
Good
9,259 reviews
Air France
7.4
Good
1,531 reviews
Check prices

Crew

8.1

Food

7.0

Boarding

7.4

Entertainment

7.0

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class
Air Canada
7.1
Good
10,698 reviews
Air France
7.4
Good
1,531 reviews
Check prices

Crew

8.1

Food

7.0

Boarding

7.4

Entertainment

7.0

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class
Lufthansa
6.8
Okay
7,775 reviews
Air France
7.4
Good
1,531 reviews
Check prices

Crew

8.1

Food

7.0

Boarding

7.4

Entertainment

7.0

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ottawa to London Heathrow?

    Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London Heathrow. On average, Ottawa has 3 outbound flights to London Heathrow per day from 4 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

  • How long is the flight from Ottawa to London Heathrow Airport?

    A quick flight from Ottawa to London Heathrow Airport can take about 9h 45m. Virgin Atlantic provides one of the quickest options available for as low as C$ 1,013. The distance between Ottawa and London Heathrow Airport is about 5343 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Ottawa to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Ottawa to London Heathrow Airport round-trip from C$ 771. Other airlines that can offer you cheap pricing are United Airlines, from C$ 881, and Air Canada, from C$ 892. Air France is 26% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Ottawa to London Heathrow Airport one-way?

    The cheapest airlines for a one-way flight from Ottawa to London Heathrow Airport are WestJet (C$ 363), Air Canada (C$ 472), and Lufthansa (C$ 543).

  • What are the most reliable airlines from Ottawa to London Heathrow Airport?

    The top 3 most reliable airlines when flying from Ottawa to London Heathrow Airport are Air Canada (33%), Aegean Airlines (33%) and Austrian Airlines (33%).

  • What are the cheapest flights from Ottawa to London Heathrow Airport?

    On average you can expect to pay C$ 1,044 for a flight from Ottawa to London Heathrow Airport. The cheapest flight overall is C$ 863 while the most popular route, (Ottawa - London Heathrow) is currently priced at C$ 813.

  • Can I find deals for flights from Ottawa to Heathrow that include hotel bookings?

    Yes. In addition to deals on Ottawa to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Heathrow.

  • Can I find deals for business class flights from Ottawa to Heathrow?

    Yes. Cheapflights offers flight deals from Ottawa to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 611). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 919). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Sutton
Twickenham
Gatwick
Slough
Marlow
Cobham
Milton Keynes
Leamington Spa
Romford
Watford
Bedford
Luton
High Wycombe
Stratford-upon-Avon
Hounslow

Browse thousands of different options on Cheapflights for your next trip

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Fly from Ottawa to Heathrow on these airlines

Choose from the following airlines for your flight from Ottawa to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 9 February 2026.
Air Canada flights from Ottawa to London Heathrow
Lufthansa flights from Ottawa to London Heathrow
United Airlines flights from Ottawa to London Heathrow

Top 4 airlines flying from Ottawa to Heathrow

Discover the top 4 airlines that operate flights from Ottawa to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 9 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapestC$ 771AverageC$ 950FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapestC$ 881AverageC$ 1,097FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 893AverageC$ 1,032FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapestC$ 939AverageC$ 1,049FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ottawa to Heathrow?

When you search for this flight from Ottawa to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ottawa to Heathrow with no change fees?

Yes, we can. To see specific flights from Ottawa to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Ottawa to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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